form .btn-dark{
    margin-right: 10px;
}
form .form-control{
    color: #666;
}
.mr-2{
    margin-right: 10px;
}
.md-header {
    position: sticky;
    top: 55px;
    z-index: 9;
}
.col-type .row-cols-auto .col{
    width: 100%;
}
.col-tag .row-cols-auto .col{
    width: 50%;
}
@media (min-width: 1400px) {  
    .col-tag .row-cols-auto .col{
        width: 33.3%;
    } 
}
@media (min-width: 1900px) {  
    .col-tag .row-cols-auto .col{
        width: 25%;
    } 
}